{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["used for", "part of", "conjunction", "feature of"], "input": "Significantly improved accuracy can be achieved by applying the rotation-invariant features to classify SAR -LRB- synthetic aperture radar -RRB- sea ice and Brodatz imagery ."}
{"used for": [{"subject": "rotation-invariant features", "object": "SAR -LRB- synthetic aperture radar"}], "part of": [], "conjunction": [], "feature of": []}